Electric-lighting system.



D. E. WESCOTT.

ELECTRIC LIGHTING SYSTEM.

APPLIcATwN FILED man. in. ma.

altar/wag 2 SHEETS-SHEET l- Patented Apr. 22, 1919.

O 0 vk s1 D. E. WESCOTT.

ELECTRIC LIGHIING SYSTEM.

APPLICATION FILED MAR. 3|. I9l6.

Patented Apr. 22, 1919.

2 SHEETS-SHEET 2.

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UNITED STATES PATENT OFFICE Specification of Letters Patent.

Patented Apr. 22, 1919.

Application filed March 81, 1916. Serial No. 88,125.

7?) all whom it may concern:

Be it known that I DANA E. Wnscorr, citizen of the United States ofAmerica, residing at #729 So. Michigan street, South Bend, in the countyof St. oscph and State of Indiana, have invented certain new and usefulImprovements in Electric-Lighting Systems, of which the. fOllOWlIlg is aspecification.

This invention relates to electric 1i hting systems, and has for itsparticular oh ect, to provide means whereby a plurality of lamp circuitscan be controlled from a central station to extinguish the lamps in allof said circuits simultaneously, or to extinguish the lamps in certaincircuits at a different interval of time from the remaining circuits.

This invention is particularly adapted for use in connection with anarc-lamp or constant current circuit and which isconnected to control aplurality of auxiliary incandescent lamp circuits which are required tohe extin ished separately and at predetermine] times.

These and other objects hereinafter described, are attained by the meansillustrated in the accompan ing drawings, in which:

Figure 1 is a iagrammatic view showing two auxiliary lamp circuitsconnected to an arc-lam circuit. d

Fig. is a side elevation of a portion of a cut-out shown in Fig. 1.

F ig, 3 is a detail pers ective view of the lower end of the opera ingrod shown in F' s. 1. and 2.

i 4 is a view in elevation of'thetoothed meni er of the cut-out shown inflattened condption. g

Fig. 5 is. aperspective view of a modified form of solenoid mom" r; and

Fig. 6 is a diagrammatic view showing a three way circuit.

Similarreferenoe numerals in all of the figures of the drawingsdesignatelilie parts.

Referring to the drawings fi designates an. arc-lamp. circuit haying-"agenerator Got the. usual. type, and the arc-lamps 7, connectedin seriesand indicated diagrammatt cally, and aswitch 8. 1.

Connected .in series wins-the cirouit15,' are the solenoid magnets 9which serve to control the movements of'thefd'ouhle core 10 and whichcarries the contact.- late 11. The ends ,ofthisplatell are adap d toengage with the stationarycontacts 12 to close a primary ortraiisformercircuit 13, to which power is supplied b a generator of an well knowntype and w ich is not shown in the drawings. From the above description,it will be seen, that the opening of the switch 8 will d'emagnetize themagnets 9, which will allow the core 10 and the plate 11 to fall andbreak the connections of the primary circuit.

As shown in the drawing, there is also connected in series with thecircuit 5 another pair of solenoid magnets 14 which control a doublecore 15, and the same carries a contact plate 16, whose ends engage thestationary contacts 17 to close the auxiliary incandescent lamp circuits18 and 19 and which receive power through the transformers 20 and 21from the primary circuit 13. The incandescent lamps 23 of these circuitsare connected in multiple therewith.

It being desirous in this system to extinguish permanently one circuitof incandescent lamps before the other set, in this case the lamps 23, acut-out is provided which is constructed as follows: Contact plate 16 isprovided on its upper side with an insulating block 24 provided with acentral aperture through which passes a rod 25 and which also passesthrough an aperture in said contact plate 16. Said rod is provided with.a head 26 which is larger than the aperture in block 24 and by which therod is suspended. The lower end of the rod is provi ed with a cross-arm27' which is adapted to engage the edges of the teeth 28 and 29 in thecylindrical members' 30 and 31 to rotate said rod and arm. Thesecylindrical members are supported in a suitable frame 32 and said rod 25passes freely through said members 30 and 31, and which are spaced apartwith their teeth disposed opposite each other. The cross-arm ispositioned between said members 30 and 31. from one member to the otherThe teeth of the member 30' are formed with notches of equaldepthjhetwefen them, and those of the member 31; are formed withalternate d p and shallow notches; as clearly shown in ig. 4 of thedrawings, and the teethof one memher are staggered relatively to theteeth of eother set.

Thus it will be seem that when the crossarm 27 drops downwardly from adeep notch in the member 31 as shown in Fig. 3, it angages an incl'me'edge of a tooth in the member 30, which forces it sidewisein its courset the bottom of'the notch and consequently rotates the rod 25 beyond thevertical alinement of the next tooth in the member 31, so that, inmoving upwardl it will engage the inclined edge of said toot which willguide it into the next notch and in position to engage another tooth inthe member 30 when it again descends.

The contact plates 11 and 16 are resiliently supported from the cores 10and 15 respectively, they being supported on springs 33 which are inturn sup-ported on nuts 34 adjustably secured on the lower ends of thesuspension rods 35 and are secured in any desired manner to the cores 10and 15. These suspension rods 35 of each core are preferably positionedone on each side of the rod 25 and pass freely through apertures in theblocks 24 and the contact plates, and it is understood, that when adouble pole switch is used, none of the several parts of the cutoutmechanism are ever in electric contact with the contact plates. Bysupporting the plates 11 and 16 in the manner described, it is obviousthat the cores can move a slight distance independently of the contactplates, so that any slight variation in the voltage of the are circuit,will not disturb the engagement between the plates 11 and 15 and theircontacts, thereby furnishing to the lamps 23 and 24 an even power whichwill give a steady light.

As shown in the drawings, circuits 18 and 19 are formed with threewires,one wire 3-6 being" common to both circuits and to" gether with a wire37 forms the circuit 19 and is connected to the terminals of one member37' of the transformer 21, and h remaining wire 38 of the circuit 18 isconneeted to one of the fixed eontaets 17 which is engaged by one of theterminals of the plate 16. The opposite contact 17 is con,- nected toone terminal of another member 39 of the transformer 21, the other endof said member39 being: connected to the same terminal of the member 37as is the wire 36. Thus the transformer member 39 is conne ted incircuit 18' and the member 37 is connected in the circuit 19. I

Assuming that the parts are positioned as shown in Fig. 1, the lamps inall of the circuits arelighted. It now, being desirous of extinguishingthe lamps 2B in circuit 18 and keep them nnl ighted while the lampsinthe circuit 19 are lighted, the operator at thereontral station of theare circuit will momentarily open the-switch 3 which Will break thecircuit 13 at the contacts 12 and shut 011' the current furnished to thecircuits 18 and 19 and consequently out out all of the 16mP$ in of thecircuits. At the same time t is obvious that the arc-lamps will also beextinguished; simulten vusly the magnets 14 are deener "zed therehyallowing the core 1 p te 1 a d M12 to e e hich will cause the cross-armto d scen firg one of the deep notches in member 31, as at 41 in Fig 2,t0 the inclined edge of the tooth 42 in the member 30, which will directit downwardly on an incline to the bottom of the notch and consequentlyrotate the rod 25. In'lmediately the operator returns the switch to aclosed position, which will'at once energize the magnets 9 and 14, andtheir cores will be drawn upwardly. The upward movement of the core 10will close the circuit 13 at the, contacts 12'. At the same time, thecore 15 will ascend together with the plate 16, rod 25 and it; cross-arm27, but said cross-arm in moving upward from the notch of the tooth 42will engage the inclined edge of the tooth 4 in, the member 31 and bedirected into the shallow notch of that tooth. This will limit theupward movement of the plate 16 and rod 25, and consequently prevent theends of the plate 16 from engaging with the contacts 17 and thus keepingthe circuit 18 open with its lamps 23 unlighted. The circuit 19 is notaliected by the open circuit 18 and will receive current through thetransformer from the circuit 13, and its lamps will remain lightedaslong as the circuit 13 is closed.

Should the member 31 be constructed with the deep andshallow' notches,as shown in the drawings, another opening and closing of the switch 8,will rotate the cross-arm in thenezrt deep notch and this will close thecircuit 18 again and its lamps will be lighted.

It will be understood that the deep and shallow notches in the member 31can be arranged in any suitable combination to control any number ofauxiliary circuits as desired.

It will be observed, that in this system a constant current circuit isused as a control or master circuit for a plurality of auxiliaryincandescllfi, circuits which can be extinguished separately and atdifferent times of'th'e day or nig'ht, and all can be controlled by anoperator located at the station. It is further evident, that varioususes and combinations can be made with this system, audit will be seen,that whenjthe switch of the arc-circuit is thrown opemthe primary ortr'ansio 'fmer circuit will be cut out and remain so during the tiniethearccircu i t is idle, thus saying "thelealr eilpss in the primarycircuit duringthe inactive Pa Qflh y- I, a

,Thesele e memhe ho n i g-v 5 is provided'with a contact plate 42'.mounted in eachend of the supporting bar 48' and profgaeti'ng to bothsides thereof, forming a don le P916 switch in contjradistinction to thetype shown iii. Fig. 1, the contact pla e- ,1 i sen -l g tudin l ofhe 1. Pe aking a si p le u q ;.n Fig.- 15 itfn'r ill be observer 1, thatwhen he u u p e ste i nect the r 38' and tth 'n nbcr t il ex in u h hlamps in both circuits 44 and 45, which are duplicates of the circuit 18in Fig. 1.

It is obvious that the master circuit may be varied at the station byeither short circuiting the dynamo, lowering the quantity of current inthe circuit, or opening the circuit momentarily through the switch.

Having thus fully described the invention, what is claimed is:

1. An electric lighting system, comprising a constant current circuit, aprimary circuit, means responsive to the condition of the constantcurrent circuit for controlling the primary circuit, a plurality of lampcircuits arranged to derive power from the primary circuit, and acircuiting means for certain of the lamp circuits responsive forcircuiting purposes to alternate energizations only of the constantcurrent circuit.

2. An electric lighting system, comprising a constant current circult, aprimary circuit, means responsive to the energization and deenergizationof the constant current circuit for controlling the primary circuit, aplurality of lamp circuits deriving power from the primary circuit, andmeans whereby certain of the lamp circuits may be deenergized throughdeenergization of the constant current circuit and maintaineddeenergized throughout a predetermined number of energizations anddeenergizations of the constant current circuit.

3. An electric lighting system, comprising a constant current circuit, aplurality of lamp circuits, a means directly responsive to eachenergization and deenergization of the constant current circuit formaking and breaking certain of the lamp circuits, and another meansresponsive to said conditions of the constant current circuit for makingand breaking the remaining lamp circuits only through a predeterminednumber of energizations and denergizations of the constant circuit.

4. An electric lighting system, comprising a constant current circuit, aswitch for controlling the energization of such circuit, a plurahty oflamp circuits, means directly responsive to each actuation of saidswitch for controlling certain of the lamp circuits, and another meansfor certain other of the lamp circuits for operatively controlling saidlamp circuits only following a predetermined number of operations ofsaid switch.

5. An electric lighting system, comprising a constant current circult, aswitch for opening and closing said circuit, a'plurality of lampcircuits, means directly responsive to each operation of said switch forcontrolling certain of said lamp circuits, and a circuiting controlmeans for the remaining lamp circuits responsive for circuiting urposesto alternate closing operations on y of said switch.

In testimony whereof I afiix my signature in presence of two witnesses.

DANA E. WESCOTT. Witnesses:

HARVEY KOONTZ, HELEN GRIFFIN.

Copies of this patent may be obtained tor five cents each, by addressingthe Commissioner of Patents,

Washington, D. G.

